package org.apache.lucene.index;

/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.io.Closeable;
import java.io.IOException;

final class FormatPostingsTermsWriter extends FormatPostingsTermsConsumer implements Closeable {

    final FormatPostingsFieldsWriter parent;
    final FormatPostingsDocsWriter docsWriter;
    final TermInfosWriter termsOut;
    FieldInfo fieldInfo;

    FormatPostingsTermsWriter(SegmentWriteState state, FormatPostingsFieldsWriter parent) throws IOException {
        this.parent = parent;
        termsOut = parent.termsOut;
        docsWriter = new FormatPostingsDocsWriter(state, this);
    }

    void setField(FieldInfo fieldInfo) {
        this.fieldInfo = fieldInfo;
        docsWriter.setField(fieldInfo);
    }

    char[] currentTerm;
    int currentTermStart;

    long freqStart;
    long proxStart;

    /** Adds a new term in this field */
    @Override
    FormatPostingsDocsConsumer addTerm(char[] text, int start) {
        currentTerm = text;
        currentTermStart = start;

        // TODO: this is abstraction violation -- ideally this
        // terms writer is not so "invasive", looking for file
        // pointers in its child consumers.
        freqStart = docsWriter.out.getFilePointer();
        if (docsWriter.posWriter.out != null)
            proxStart = docsWriter.posWriter.out.getFilePointer();

        parent.skipListWriter.resetSkip();

        return docsWriter;
    }

    /** Called when we are done adding terms to this field */
    @Override
    void finish() {
    }

    public void close() throws IOException {
        docsWriter.close();
    }
}
